Excellent image, I really like how the thistle contrasts with the dark green background. In my opinion the image might have worked better without the seeds (?) hanging onto the bottom.
I really like this shot. The contrast with the dark green background is lovely, and the soft tangles in the background really add movement and depth. Very nice composition.
It is a thistle! The dark background sets it off well i like this one the best of the ones you posted. It looks like some strange creature munching something!